The problem might be with your keyboard. To verify this, connect another keyboard and observe the results. If the problem disappears, it might mean your keyboard is faulty or that its Caps Lock key ...

Justin Pot is a freelance journalist who helps people get more out of technology. How often do you actually use caps lock? Unless you're a PERPETUALLY ANGRY UNCLE, the answer is probably not much.

Some fonts in Microsoft Office are designed to display all letters in uppercase, regardless of whether the Caps Lock is on or off. Copperplate Gothic is one such font. Check this and change the Font.